/**
 * Created by Administrator on 2018/12/24.
 */
window.onload=function () {
    // var video = document.getElementById("video");
    // var top_a = document.getElementById("top_a");
    // var top_b = document.getElementById("top_b");
    // video.onmousemove=function () {
    //     top_b.style.zIndex = "5";
    //
    // };
    //
    // top_a.onmouseout = function () {
    //     top_b.style.zIndex="-1";
    // }

};